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Absence of Exceptional Points in Square Waveguide Arrays with Apparently Balanced Gain and Loss

The concept of parity-time (PT) symmetry in the field of optics has been intensively explored. This study shows the absence of exceptional points in a three-dimensional system composed of a square waveguide array with diagonally-balanced gain/loss distribution. More specifically, we show that an arr...

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Detalles Bibliográficos
Autores principales: Liu, Zhenzhen, Zhang, Qiang, Liu, Xiangli, Yao, Y., Xiao, Jun-Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4780277/
https://www.ncbi.nlm.nih.gov/pubmed/26948829
http://dx.doi.org/10.1038/srep22711